All the law professors and ex-AGs say that there had to be circumstances to elevate the document search to DefCon-5 and a raid on an ex-president's home.
I don't remember them all but there are items like:
1. You had to know that the evidence had to be gotten ASAP or it would have been destroyed. (the boxes were in locked storage for months)
2. The Trump team had to be unwilling to provide subpoenaed documents. (the documents were NOT subpoenaed prior to the raid)
3. To get the search warrant an affidavit had to be provided to the judge explaining why the immediate raid was necessary.
4. To get the search warrant there had to be evidence of a crime. The affidavit would detail the predicate for the crime and necessity of the raid.
So without the affidavit we don't know the CRIME, and we don't know the EVIDENCE of that crime, and we don't know the source that the evidence exists.
Without the affidavit we can say its just another FBI false evidence trap. I believe that Garland lied wen he said that there was no other option than the raid, that a subpoena wouldn't have worked.